Toggl - Toggl is an online time tracking tool. It features 1-click time tracking and helps you see where your time goes. Free and paid versions are available.

Workday - Workday is an on‑demand financial management and human capital management software solution.

Clockify - Simple and free time tracker. Perfect for small and mid-sized businesses as well as freelancers. Unlimited projects and users, unlimited productivity. Get all the premium functionalities, completely free.

Paylocity - Paylocity has revolutionized the industry and has quickly become the leading independent provider of online payroll services and HR solutions.

Cattr - Cattr is a free open-source self-hosted time tracker with desktop clients for windows, mac, linux.

Paycom - Paycom is a Human Capital Management system that helps companies manage the complete employment life cycle, from recruitment to retirement.